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// SPDX-License-Identifier: GPL-2.0+ OR Apache-2.0
/*
* Copyright (C), 2021, Coolpad Group Limited.
* Created by Yue Hu <huyue2@yulong.com>
*/
#ifdef WITH_ANDROID
#include <stdio.h>
#include <sys/stat.h>
#include "erofs/block_list.h"
#define EROFS_MODNAME "erofs block_list"
#include "erofs/print.h"
static FILE *block_list_fp;
int erofs_droid_blocklist_fopen(void)
{
block_list_fp = fopen(cfg.block_list_file, "w");
if (!block_list_fp)
return -1;
return 0;
}
void erofs_droid_blocklist_fclose(void)
{
if (!block_list_fp)
return;
fclose(block_list_fp);
block_list_fp = NULL;
}
static void blocklist_write(const char *path, erofs_blk_t blk_start,
erofs_blk_t nblocks, bool first_extent,
bool last_extent)
{
const char *fspath = erofs_fspath(path);
if (first_extent) {
fprintf(block_list_fp, "/%s", cfg.mount_point);
if (fspath[0] != '/')
fprintf(block_list_fp, "/");
fprintf(block_list_fp, "%s", fspath);
}
if (nblocks == 1)
fprintf(block_list_fp, " %u", blk_start);
else
fprintf(block_list_fp, " %u-%u", blk_start,
blk_start + nblocks - 1);
if (last_extent)
fprintf(block_list_fp, "\n");
}
void erofs_droid_blocklist_write_extent(struct erofs_inode *inode,
erofs_blk_t blk_start,
erofs_blk_t nblocks, bool first_extent,
bool last_extent)
{
if (!block_list_fp || !cfg.mount_point)
return;
if (!nblocks) {
if (last_extent)
fprintf(block_list_fp, "\n");
return;
}
blocklist_write(inode->i_srcpath, blk_start, nblocks, first_extent,
last_extent);
}
void erofs_droid_blocklist_write(struct erofs_inode *inode,
erofs_blk_t blk_start, erofs_blk_t nblocks)
{
if (!block_list_fp || !cfg.mount_point || !nblocks)
return;
blocklist_write(inode->i_srcpath, blk_start, nblocks,
true, !inode->idata_size);
}
void erofs_droid_blocklist_write_tail_end(struct erofs_inode *inode,
erofs_blk_t blkaddr)
{
if (!block_list_fp || !cfg.mount_point)
return;
/* XXX: a bit hacky.. may need a better approach */
if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
return;
/* XXX: another hack, which means it has been outputed before */
if (erofs_blknr(inode->i_size)) {
if (blkaddr == NULL_ADDR)
fprintf(block_list_fp, "\n");
else
fprintf(block_list_fp, " %u\n", blkaddr);
return;
}
if (blkaddr != NULL_ADDR)
blocklist_write(inode->i_srcpath, blkaddr, 1, true, true);
}
#endif
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